The War Machines - Production

Production

Working titles for this story included The Computers. The idea for this story came about when Kit Pedler was being interviewed for a position as science adviser to the series. The producers asked all of the interviewees what would happen if the recently-built Post Office Tower somehow took over. Pedler suggested that it would be the work of a rogue computer that communicated with the outside world by means of the telephone system. The producers liked this suggestion and not only offered Pedler the job but developed the idea into a script (one of the few to feature a 'Story Idea by' credit). Pat Dunlop was then hired to write a full set of teleplays from Pedler's idea, but quit after becoming busy with other work, and the teleplays were subsequently done by Ian Stuart Black, who had also written the previous serial, The Savages.

Only one War Machine prop was actually constructed; the production team changed the numbers, to represent the different machines.

The titling style of each episode in this serial differs from the standard titles of other serials. Instead of a title overlay, after the "Doctor Who" logo has faded, the screen shifts to a solid background containing four inversely coloured rectangles aligned down the left-hand side (reminiscent to an old-style computer punch card). The title, one word at a time, scrolls upwards - "THE", "WAR", "MACH", "INES" - with a final flash displaying the complete title on two lines. Another flash reveals the writer, the next flash reveals the word "EPISODE", and the final flash shows the actual episode number. All of the lettering displayed in this titling sequence is shown in a retro-computer font. Each of the four episodes' title sequences have slight variations to them.